Neutron Stars in the Relativistic Hartree-Fock Theory and Hadron-Quark Phase Transition

Details Neutron Stars in the Relativistic Hartree-Fock Theory and Hadron-Quark Phase Transition Neutron Stars in the Relativistic Hartree-Fock Theory and Hadron-Quark Phase Transition

2009-10-21

arxiv.org/abs/0910.4087v1

"Exotic States of Nuclear Matter", World Scientific, Singapore (2008) pp. 180--187. International Symposium on Exotic States o

Physics

Nuclear Physics

Nuclear Theory

8 pages, 8 figures

Scientific paper

Based on the density-dependent relativistic Hartree-Fock theory (DDRHF) for hadronic matter, the properties of neutron stars have been studied and compared with the results from the density-dependent relativistic mean field theory (DDRMF). Though similar equations of state are obtained, DDRHF calculations give larger fractions of proton, electron and muon at high baryon density for neutron star matter than the ones from DDRMF. The maximum masses of neutron stars lie between 2.3 M$_\odot$ and 2.5 M$_\odot$, and the corresponding radii between 11.7 km and 12.5 km. In addition, the phase transition from hadronic matter to quark matter in neutron stars is studied by using the MIT bag model for the quark phase. The transition is studied in both Gibbs and Maxwell constructions.

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